Sash-fastener



(Model.)

SASH LLSTENERl u No. 255,194 Patented Mar. 21,1882.

UNITED STATES PATENT OEEICE.

HERBERTL, ROBERTSON, OF BROOKFIELD, ASSIGNOR OF ONE-HALF TO JAMES B. HASKINS, OF WEST BROOKFIELD, MASSACHUSETTS.

SASH-FSTENER.

SPECIFICATION forming part of Letters Patent No. 255,194, dated March 21, 1882.

Application inea August ai, Iasi. (Model.)

To all whom it may concern:

Be it known that I, HERBERT L. ROBERT- soN, a citizen of the United States, residing f at Brookfield, in the county of Worcester and State ot' Massachusetts, have invented new and useful Improvements in Window-Stops, of which the following is a specification.

This invention relates to the details ot' the construction ot' au improved vwindow-stop, the object being to provide such astop in Awhich the bolt-lever is double-acting-that is to say, that whether it be lifted or drawn down the bolt will be drawn back to permit the window to be raised or lowered.

Inthe drawings forming partot' this specication, Figure lis a front elevation ot' a window-stop constructed according to my inventionhthe outer side of the case being removed to show the operative parts andtheir relative positions therein. Fig. 2 is a perspective view ot' the rocking bolt-lever, and Figs. 3 and 4 are views of the bolt in two positions.

Inthe drawings, ct is the window-stop case. c the rocking bolt-lever. d is the bolt; and e 1s a spring.

The case a is ot suitable metallic construction, adapted to receive within it from the under side said bolt and spring and lever. The sides ot' the case a are perforated ona line to permit of passing the bolt el through them, as in Fig. 1, spring being slipped over the end of said bolt, one end bearing against a shoulder thereon and the other against the inner side of case a, as shown, thus tending to drive the bolt d to the right and project its larger end beyond the side ot' the case. Said bolt cl has a transverse cut, o, across one side ot' it, one end ot' said cut being straight or at right angles to the axis of said bolt and the opposite end made of curved form 4from side to side, as shown.

The rocking bolt-lever c has its straightfaced arm made of about the inside Alength of case a and of proper thickness to allow said case to he closely fastened to the window-sash when said lever is within it. One side 0f the said straight-faced arm of lever c has two bosses, a: thereon, which have a bearing against the inner face ofl the removed side ot' case a, and transversely across the side of said straight arm on which said bosses are is made a cut, p, whose edges are curved, as shown,

and at right angles to said cut o is formed a second half-round cut, o', and a thumb-piece arm, h, on said lever projects nearly at right angles fromlits lower end.

Bolt d having been placed in case a, the rocking lever c is nextplaced therein in the position shown in Fig. l, its arm h being passed through one side of said ease, which is cut away to forma vertical slot, n, to allow said arm to have a vertical movement. When said rocking lever c is laid into case a, the cut o on said lever and the cut o on bolt d coincide in position; but cut o is somewhat wider than the `diamater ot` said bolt at the bottom of cut o therein, while the length ot' the cut o is about the same as the width ot' said arm at the base of the cut o therein. Thus the straight arm oflever c is permitted to have a free motion by the side of bolt d, as hereinafter described.

The dotted lines in Fig. l indicate the positions of the lever c when arm h is lifted or drawn down, its normal position being that there shown in fullvlines-that is to say, having the face ot its straight arm held against the side of case a by bolt d, the latter being actuated by spring e. Thusit will be seen that when arm h is lifted lever c rocks on the upper end ot' its straight arm, and when said arm is drawn down said lever rocks on the lower end of said straight arm, in both cases producing precisely the same. effect on bolt d-that is, drawing it backand when arm l1J is released spring restores the parts to their normal position, as shown in Fig. 1.

This window-stop is' adapted to operate in a window-frame having perforations to receive the end of bolt d or with projecting bolt-stops secured upon the face ot' said frame in the ordinary way.

What I claim as my invention is In a window-stop, the combination,with case a, perforated to receive bolt d, and having the slot n therein, of the rocking lever c, provided with arm h, bolt d, having the cut o therein, in which said lever c engages, and spring e,

ysubstantially as set forth.

HERBERT L. ROBERTSON.

Witnesses:

H. A. GIIAPIN, J. D. GARFIELD. 

